An electrochemical reaction will be spontaneous if _____.?

Question

An electrochemical reaction will be spontaneous if _____.
A) ΔG is positive
B) the standard emf of the cell is negative.
C) the standard emf of the cell is positive.
D) resistance is positive.

Answer 1

The correct answer is C, standard potential should be positive.
If you can't remember the correct sign easily, think that the general rule is that for spontaneous reactions of any type ΔG<0 and since for redox reactions ΔG= -nFE, E has to be positive.

Answer 2

The salt bridge provides the mechanism for the pass of electrons between the anode and cathode. If the salt bridge is incapable of transfering the electrons simply by incapatabilities in the electrolyte, then the electron pass does not take place. it is likewise importnat that the electrolyte answer around the anode and cathode is authentic to assist the needed a million/2 reaction as calculated utilizing the Nernst Equation. take a inspect the internet website it is stated in the source...